The Western Australian margin is a unique coral reef province, with modern development occurring at latitudes as far south 29°S. genesis of this province may go back to the Oligo-Miocene, since geological features ~30 million-year-old and younger interpreted reefs are known from offshore seismic surveys. nature these is, however, uncertain, they only sparsely sampled, time-equivalent outcrops p...

High latitude ocean gateway changes are thought to play a key role in Cenozoic climate evolution. However, the underlying ocean dynamics are poorly understood. Here we use a fully coupled atmosphere-ocean model to investigate the effect of ocean gateway formation that is associated with the subsidence of the Greenland-Scotland Ridge. We find a threshold in sill depth (∼50 m) that is linked to t...

Southwestern Colombia and northern Ecuador were shaken by a shal-low-focus earthquake on 12 December 1979. The magnitude 8 shock, located near Tumaco, Colombia, was the largest in northwestern South America since 1942 and had been forecast to fill a seismic gap. Thrust faulting occurred on a 280- by 130-kilometer rectangular patch of a subduction zone that dips east beneath the Pacific coast of...

Dissimilatory nitrate reduction to ammonium (DNRA) and denitrification are two nitrate respiration pathways in the microbial nitrogen cycle. Diversity and abundance of denitrifying bacteria have been extensively examined in various ecosystems. However, studies on DNRA bacterial diversity are limited, and the linkage between the structure and activity of DNRA communities has yet to be discovered...

Coral reefs are increasingly threatened by global and local anthropogenic stressors such as rising seawater temperature, nutrient enrichment, sedimentation, and overfishing. Although many studies have investigated the impacts of local and global stressors on coral reefs, we still do not fully understand how these stressors influence coral community structure, particularly across environmental g...

The archaeology of the immediate coastline West Africa remains surprisingly little understood, and what research has been undertaken often focused on questions relating to sea-based interactions precolonial polities lying slightly inland. This paper reports results excavations Ohlinhoué, a small lagoonal island in western Republic Bénin. A locally manufactured ceramic assemblage was recovered, ...